Guillaume St-Onge

I am a Research Assistant Professor in the Department of Physics at Northeastern University, a member of the Roux Institute, and a core faculty member at the Network Science Institute. I will be transitioning to the position of Assistant Professor in the School of Electrical Engineering and Computer Science at the University of Ottawa in July 2026. Prior to this, I completed an M.Sc. and Ph.D. in Physics at Université Laval as part of the Dynamica Research Lab; I was a visiting graduate student at the Vermont Complex Systems Institute in the Joint Lab; and I was a postdoc in the MOBS Lab at the Network Science Institute in Boston.

My research centers on how contagions, such as infectious pathogens or social behaviors, spread through networks. I build realistic models of these processes and computational methods to analyze their evolution, drawing on stochastic processes, dynamical systems, complex networks, Bayesian inference, and computational science. My current research interests include predicting the spatial spread of disease; identifying when distinct contagion mechanisms yield equivalent phenomenology; forecasting epidemic time series in real time; and developing optimization and inference methods for global biosurveillance sentinel systems.